According to the CDC WeChat official account, in March, attention should be paid to acute respiratory infectious diseases such as influenza, measles, human avian influenza and norovirus gastroenteritis. The winter and spring seasons of other acute respiratory infectious diseases such as influenza are the high incidence seasons of acute respiratory infectious diseases, and the risk of transmission of respiratory infectious diseases is high. The main suggestion is to maintain good hygiene habits. When coughing or sneezing, cover your mouth and nose with tissues, towels, etc; Wash your hands frequently and try to avoid touching your eyes, nose, or mouth with your hands; Balanced diet, moderate exercise, adequate rest, etc. Avoid contact with patients with flu like symptoms. If contact is necessary, maintain a distance of at least 1 meter and wear a mask. When experiencing respiratory symptoms such as fever, cough, sore throat, etc., avoid going to crowded places, and wear masks throughout the journey and travel (such as by train, plane, etc.). Vaccination is the most effective means of preventing influenza. It is recommended that the appropriate age group without contraindications complete influenza vaccination, especially key populations such as pregnant women, young children, the elderly, and patients with chronic underlying diseases. According to the applicable conditions for vaccination, other respiratory infectious disease related vaccines can be selected for vaccination. Measles is an acute and rash respiratory infectious disease caused by the measles virus, which can occur in all seasons, with winter and spring being the most common. Children are the main susceptible population. Measles is one of the most contagious diseases, and patients are the source of infection for measles. It is contagious from the latent stage of the disease to 5 days after the rash appears. People who have not been infected with measles and have not received the measles vaccine are more susceptible to infection and disease after coming into contact with measles patients. Measles is mainly transmitted through respiratory droplets, and can be spread to the air through sneezing, coughing, and other means by patients. susceptible individuals can become infected after inhaling the virus; It can also be transmitted through direct contact with the secretions of infected individuals. The main recommendation is to receive vaccines containing measles components, which is the most effective measure to prevent measles. Children of appropriate age should be vaccinated in a timely manner according to the immunization program. Strengthen patient management, adhere to early detection, diagnosis, isolation, and treatment. Avoid going to crowded and poorly ventilated public places, especially pay attention to strengthening the protection of infants and young children under 8 months old who have not yet reached the age for vaccination. When going to crowded places and hospitals, personal protective measures should be taken, such as wearing masks scientifically and avoiding staying in hospital clinics during peak measles outbreaks, in order to reduce the chance of contracting measles. Human infection with avian influenza is an acute respiratory infectious disease caused by accidental infection of humans with avian influenza virus. The main symptoms include fever, accompanied by cough, headache, muscle soreness, etc. Severe cases may present with acute respiratory distress syndrome (ARDS) and multiple organ failure. People are mainly infected through contact with infected poultry, other animals or their secretions, excreta, or contact with environments or items contaminated with viruses. The main suggestion is to avoid direct contact with poultry and other animals. If contact is necessary, personal protection and hand hygiene should be taken. Maintain good eating habits, follow the principle of "separating raw and cooked, thoroughly cooking", and use separate knives, cutting boards, containers, etc. for handling raw poultry meat and eggs to avoid cross contamination; Poultry meat and eggs should be thoroughly cooked before consumption; Purchase chilled or frozen poultry meat that has passed inspection and quarantine, and avoid self slaughtering live poultry. If there is a history of contact with poultry or other animals within 7 days, or if you have been to a live poultry market and experience discomfort such as fever, cough, and difficulty breathing, you should seek medical attention as soon as possible and proactively inform the doctor of the suspected contact history. Norovirus gastroenteritis is mainly transmitted through ingestion of virus-infected food or water, contact with patients or their contaminated items and environment, or inhalation of aerosols produced when patients vomit. The population is generally susceptible to Norovirus, and due to the lack of cross protection between different genetic groups, multiple infections with Norovirus may occur. The common symptoms are nausea, vomiting, abdominal pain, and diarrhea. The main symptoms in adults are mostly diarrhea, and the main symptoms in children are mostly vomiting. The disease can occur all year round, and October to March of the following year is the peak season for Norovirus infection. The main suggestion is to pay attention to hand hygiene. Wash hands frequently, especially before meals, after using the toilet, and before processing food. Pay attention to the hygiene of diet and drinking water. Do not drink raw water, thoroughly wash vegetables, fruits and vegetables, and cook food thoroughly, especially oysters and other shellfish and seafood. Pay attention to disinfection. If there is vomit from relatives or friends during a meal, chlorine containing disinfectants should be used to treat it. Surfaces contaminated with vomit or feces from the patient should be promptly cleaned and disinfected with chlorine containing disinfectants or other effective disinfectants, and contaminated clothing or bed sheets should be immediately replaced and cleaned; Disposable gloves should be worn during handling, and hands should be washed carefully after cleaning. Collective units such as families, restaurants, and nursing homes should promptly report clustered cases to the local disease control department and cooperate with epidemic investigation and disposal to avoid the spread of the epidemic. (New Society)